Personal tools

Physical units/CalDims

From HaskellWiki

< Physical units(Difference between revisions)
Jump to: navigation, search
m (corrected days per year and result of the related calculation)
 
(4 intermediate revisions by 3 users not shown)
Line 1: Line 1:
The motivation for writing CalDims was to have an easy to use calculation tool that has support for units.
+
CalDims is a flexible and easy to use calculation tool that has support for units.
  
==The calculator's features==
+
== The calculator's features ==
  
 
* Support for user defined basic units and derrived units
 
* Support for user defined basic units and derrived units
 
* user defined functions
 
* user defined functions
* work sheets can be modified/saved via shell
 
* (1/3)*3 == 1 (No rounding errors)
 
 
* built-in feature to simplify units
 
* built-in feature to simplify units
 
* easy unit-conversion
 
* easy unit-conversion
  
==Planned features for future releases==
+
== Example session ==
  
* More datatypes (boolean, string)
+
<haskell>
* a worksheet GUI
+
> # A bird is moving 1 meter per second, how far will it be in 2 hours?
* Undo/Redo
+
> 1m/s * 2h | m
 +
7200 m
 +
> # A 60 Watt electric light is burning 2 hours a day. How much energy is consumed in one week?
 +
> 60 W * 2 h / d * 7 d | J
 +
3024000 J
 +
> # What's that in Watt hours?
 +
> 60 W * 2 h / d * 7 d | W h
 +
840 W h
 +
> #How much is it in a year (we derrive `year` first)
 +
> year := 365 d
 +
ok.
 +
> 60 W * 2 h / d * 1 year | W h
 +
43799.99999999999 W h
 +
> # Bits and bytes are not defined. We do so:
 +
> \u bit
 +
ok, but an object has changed
 +
> byte := 8 bit
 +
ok, but an object has changed
 +
> kbyte := 1024 byte
 +
ok.
 +
> mbyte := 1024 kbyte
 +
ok.
 +
> 2 mbyte | -
 +
16777216 bit
 +
> 2 mbyte | kbyte
 +
2048 kbyte
 +
</haskell>
 +
== Sources ==
 +
Sources are availables at HackageDB:
 +
http://hackage.haskell.org/cgi-bin/hackage-scripts/package/caldims
  
==Releases==
 
 
Current release is 1.0 rc1. It fixes some bugs that are in (deprecated) 0.9
 
 
Sources:
 
 
http://m13s07.vlinux.de/releases/CalDims/1.0/CalDims-1.0rc1.tar.gz
 
 
Binary for Linux x86-32:
 
 
http://m13s07.vlinux.de/releases/CalDims/1.0/caldims
 
 
==Contact==
 
 
The darcs repository is at
 
 
darcs http://m13s07.vlinux.de/darcs/CalDims
 
  
 
[[Category:Applications]]
 
[[Category:Applications]]
 
[[Category:Mathematics]]
 
[[Category:Mathematics]]

Latest revision as of 18:47, 1 February 2009

CalDims is a flexible and easy to use calculation tool that has support for units.

[edit] 1 The calculator's features

  • Support for user defined basic units and derrived units
  • user defined functions
  • built-in feature to simplify units
  • easy unit-conversion

[edit] 2 Example session

> # A bird is moving 1 meter per second, how far will it be in 2 hours?
> 1m/s * 2h | m
7200 m
> # A 60 Watt electric light is burning 2 hours a day. How much energy is consumed in one week?
> 60 W * 2 h / d * 7 d | J
3024000 J
> # What's that in Watt hours?
> 60 W * 2 h / d * 7 d | W h
840 W h
> #How much is it in a year (we derrive `year` first)
> year := 365 d
ok.
> 60 W * 2 h / d * 1 year | W h
43799.99999999999 W h
> # Bits and bytes are not defined. We do so:
> \u bit
ok, but an object has changed
> byte := 8 bit
ok, but an object has changed
> kbyte := 1024 byte
ok.
> mbyte := 1024 kbyte
ok.
> 2 mbyte | -
16777216 bit
> 2 mbyte | kbyte
2048 kbyte

[edit] 3 Sources

Sources are availables at HackageDB: http://hackage.haskell.org/cgi-bin/hackage-scripts/package/caldims